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Answer:2. The number of miles driven and the amount of gas used.

Explanation:

This statement is true. Not all of the potential energy of the roller coaster cars is converted to kinetic energy and back again, some mechanical energy is converted to thermal energy.

The amount of mechanical energy in the system is reduced as a result of the force of friction acting on the moving automobiles. Consequently, the mechanical energy is not wasted.

It is converted into thermal energy, which is discernible as an elevation in the track and car wheels' temperature on a roller coaster.

The coaster's kinetic energy turns back into potential energy when it climbs one of the subsequent, smaller hills after the initial lift hill.

In this manner, the track's route continuously transforms energy from kinetic to potential and vice versa.

A portion of the energy is always converted into thermal energy whenever this occurs. Friction is a source of heat energy. Frictional energy is not usable energy. It isn't put to use for labor.

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Answer:

NO Children of the same parents don't have all the same traits. A parent can pass down either a dominant or recessive trait. Can offspring get instructions for the variation of a trait from either parent? ... located on DNA, a gene carries the recipe to produce proteins to tell the cell which trait to create

Explanation:

The graph of the relationship between amplitude and decibel level of sound is not a linear graph but a logarithmic graph.

It is known as the Sound Intensity Level graph, where the amplitude of the sound is plotted on the x-axis, and the decibel level of sound is plotted on the y-axis.

As the amplitude of the sound increases, the decibel level increases as well. The relationship is not directly proportional, as a small change in amplitude can result in a significant change in decibel level. For example, a sound with an amplitude of 1 Pa has a decibel level of 0 dB, whereas a sound with an amplitude of 10 Pa has a decibel level of 20 dB. This indicates that the decibel level is increasing exponentially with the increase in amplitude.

Moreover, the graph shows that the human ear has a limited range of hearing, which is between 0 dB and 140 dB. Beyond this range, sounds become too loud to hear or can cause damage to the ear. Therefore, it is important to monitor the decibel level of sound to protect our hearing.

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Answer:

B

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Answer:

Newton is the SI unit of force

Explanation:

A force of 1 Newton is said to be applied when an object of 1kg mass is transferred into motion at 1m/s.

The Newton is the force that accelerates 1 kilogram of mass at the rate of 1 meter per second^2.

In SI base units, 1N = 1 kg-m/s^2 .

Answer:

P = 450 J

Explanation:

Given that,

Mass of a child, m = 18 kg

The vertical distance from the top to the bottom of the slide is 2.5 metres.

The Gravitational field strength = 10 N/kg

We need to find the decrease in gravitational potential energy of the child sliding from the  top to the bottom of the slide.

The formula for the gravitational potential energy is given by :

P = mgh

Substituting all the values,

P = 18 kg × 10 m/s² × 2.5 m

P = 450 J

Hence, the decrease in gravitational potential energy is 450 J.

A fuel-filled rocket is at rest. It burns its fuel and expels hot gas. The gas has a momentum of 1,500 kg m/s backward. So, The momentum of the rocket is -1500 kg m/s.

According to the law of conservation of momentum, in a closed system, the total momentum before and after a process remains constant.

A fuel-filled rocket that is initially at rest expels hot gas as it burns its fuel. The gas has a momentum of 1500 kg m/s backward.

We are required to determine the momentum of the rocket.

Consider the fuel-filled rocket as a system.

We have: Momentum before the burn = 0 kg m/s (since the rocket was at rest initially)Momentum after the burn = momentum of the expelled gas

We can therefore say that the initial momentum of the system was zero (0), and after the burn, the total momentum of the system remains the same as the momentum of the expelled gas.

Therefore: Momentum of rocket = - momentum of expelled gas

The negative sign signifies that the rocket's momentum is in the opposite direction of the expelled gas.

Hence, the momentum of the rocket is -1500 kg m/s.

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Answer: When the interference is constructive, this is shown as a bright band on the screen. When the interference is destructive, this is shown as a dark band on the screen.

Explanation: edge 2021

Answer:Bright and Dark

Explanation:

Answer:

450m

Explanation:

You would use the equation x-x0=0.5(v0+v)t as you have the time and velocities. x-x0(Change in position/displacement)=0.5(0+30)30. The distance will be 450m.

Answer:

4 m/s in negative acceleration

Explanation:

Acceleration = V- U/t

Where V is the final velocity

U is the initial velocity and t is the time given.

U = 65 m/s

V= 25 m/s

T= 10 seconds

Acceleration= (25m/s - 65m/s)÷10secs

= - 40/10

= -4m/s^2

Hence, it has a negative acceleration.

Answer:

A. negative acceleration of 4 m/s2

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Explanation:

Answer:

Explanation:

Given data

mass m= 45g

volume v= 9mL

we know that density=m/v

substituting our given data we have

\(density=\frac{45}{9} =5g/mL\)

What is Density?

The Density of a body can be defined as the ratio of mass to volume,

or

Density, mass of a unit volume of a material substance. The formula for density is \(Density= \frac{mass}{volume}\),

where d is density,

M is mass, and

V is volume.

Density is commonly expressed in units of grams per cubic centimetre.

To find the date when Deneb transits at 9:00 PM using the Skygazer's Almanac for 2022 at 40 degrees latitude, locate the transit time range for Deneb at 9:00 PM and determine the corresponding date within that range by considering the previous and following transit times.

The Deneb star's transit time can be calculated using the Skygazer's Almanac for 2022 at 40 degrees latitude. To determine the date when Deneb transits at 9:00 PM, follow these steps:
1. Locate the section in the Skygazer's Almanac that provides the transit times for Deneb at 40 degrees latitude.
2. Look for the date range in which Deneb transits at 9:00 PM.
3. Determine the specific date within that range by considering the previous and following transit times for Deneb.
4. Keep in mind that transit times may vary slightly depending on the specific latitude within the 40-degree range.
5. It's important to consult the Almanac for the correct year, as transit times can change from year to year.
Please note that I don't have access to the specific Skygazer's Almanac for 2022, so I cannot provide you with the exact date. I recommend referring to the Almanac directly to obtain the accurate information.
In conclusion, using the Skygazer's Almanac for 2022 at 40 degrees, you can find the date when Deneb transits at 9:00 PM by locating the specific transit time range and determining the corresponding date within that range.

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Answer:

Gonads

Explanation:

The gonads, the primary reproductive organs, are the testes in the male and the ovaries in the female. These organs are responsible for producing the sperm and ova, but they also secrete hormones and are considered to be endocrine glands.

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Explanation:

The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity. This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.

The spacecraft's interplanetary velocity with respect to the Sun when arriving near Mars is approximately 24,130 m/s.

To calculate the spacecraft's interplanetary velocity with respect to the Sun when arriving near Mars, given the semi-major axis (a) of 199,100,000 km and the eccentricity (e) of 0.2095, follow these steps:

1. Convert the semi-major axis from km to meters: a = 199,100,000 km * 1,000 = 199,100,000,000 meters
2. Calculate the semi-minor axis (b) using the eccentricity: b = a * sqrt(1 - e^2) = 199,100,000,000 * sqrt(1 - 0.2095^2) ≈ 188,763,068,160 meters
3. Calculate the specific orbital energy (ε) using the formula:
ε = -GM / (2a), where G is the gravitational constant (6.67430 × 10^-11 m^3 kg^-1 s^-2) and
M is the mass of the Sun (1.989 × 10^30 kg):
ε = - (6.67430 × 10^-11 * 1.989 × 10^30) / (2 * 199,100,000,000) ≈ -2.216 × 10^7 J/kg
4. Calculate the spacecraft's interplanetary velocity (v) with respect to the Sun at Mars' distance (r) using the formula:
v = sqrt(2 * (ε + GM / r)).

Assume the distance from the Sun to Mars is equal to the semi-major axis (a):
v = sqrt(2 * (-2.216 × 10^7 + (6.67430 × 10^-11 * 1.989 × 10^30) / 199,100,000,000)) ≈ 24,130 m/s

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The slide projector consists of a converging lens with a focal length of 111.00 mm. The slide is positioned 117 mm away from the lens. We need to calculate the distance between the lens and the screen.

To determine the distance from the lens to the screen, we can use the lens formula:
1/f = 1/v - 1/u, where f is the focal length, v is the distance from the lens to the screen, and u is the distance from the lens to the slide.

Given that the focal length (f) is 111.00 mm and the distance from the lens to the slide (u) is 117 mm, we can substitute these values into the lens formula.

1/111.00 = 1/v - 1/117

Solving this equation will give us the value of 1/v. By taking the reciprocal of this value, we can find the distance (v) from the lens to the screen.

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According to newton's law of gravitation, the gravitational force(F)  is directly proportional to the product mass of the moon(Mm) and the mass of the planet (Mp) and it is inversely proportional to the square of the separation between them.

Fg ∝ (Mp)(Mm) →(1)

Fg ∝ 1/d²→(2)

Combining equation (1) and (2),

Fg ∝ (Mp)(Mm)/d²

Fg =  G(Mp)(Mm)/d²

This is an equation that describes the relation between mass of moon (Mm) and mass of planet (Mp) and separation(d) between them.

To support the claim in favuor of this equation we use this equation to obtain the value of acceleration due to gravity on earth.

Let m be the mass of an object on earth then Fg between earth (Mp) and mass of an object is obtained by:

Fg =  G(Mp)(m)/R², where R= Radius of earth

This force is equal to the weight of an object i.e.,

g= G(Mp)/R²

Putting the values of G, Mp and R , we get, g=9.81 m/s²

which is the value we obtained on earth for acceleration due to gravity.

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The Propilot assist with Navi-Link's Speed Limit Assist system, when in auto mode, automatically adjusts the vehicle's speed based on the detected speed limit signs.

This is achieved through the integration of the navigation system, which communicates with the advanced driver assistance system (ADAS) to maintain a safe and legal speed while driving.

In summary, the system helps the driver to:

1. Detect speed limit signs using onboard cameras and navigation data.
2. Automatically adjust the vehicle's speed to match the detected speed limit.
3. Maintain a safe and legal speed, ensuring a more comfortable and compliant driving experience.

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The process which involves plants to cause weathering to a seed that falls into a crack in a rock therefore, breaking apart the rock is called Mechanical weathering.

This is defined as the set of weathering processes that break apart rocks into particles (sediment) through physical processes. The most common form of mechanical weathering is the freeze-thaw cycle. Water seeps into holes and cracks in rocks then the water freezes and expands, therefore making the holes larger eventually making the rock split apart.

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Answer:

root-pry

Explanation:

i took the test

The current temperature of Columbus Ohio is 17 degrees Celsius.

Celsius is a temperature scale used in the metric system to measure temperature. It is also known as the centigrade scale, as it divides the range between the freezing and boiling points of water into 100 equal intervals. The Celsius scale was proposed by Swedish astronomer Anders Celsius in 1742 and has since become the standard temperature scale in most parts of the world.

On the Celsius scale, the freezing point of water is defined as 0°C, while the boiling point of water is defined as 100°C at standard atmospheric pressure. Thus, the Celsius scale provides a convenient and widely used reference point for measuring temperature in various applications, such as weather forecasting, cooking, scientific research, and industrial processes.

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Answer:

d

Explanation:

mass and weight do not effect how fast a object falls

Answer:

A. electrical to light

Explanation:

A jumbo-tron video is a very large television that is most times fitted into walls and displayed along the main roads. It has a light-emitting display(LED) property. Energy transformation is the conversion of energy from one form to another.

The video screen just as a regular television in the house emits light, sound and heat energies. Electrical energy which flows from one end to another powers the jumbo-tron video screen and is thus converted into light, heat and sound energies.

The energy transformation that takes place when a jumbo-tron video screen shows an instant replay is electrical to light energy.

Energy transformation is the conversion of energy from one form to another.

Hence the energy transformation that takes place when a jumbo-tron video screen shows an instant replay is electrical to light energy.

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hydroxide ion. An acid is a chemical that, when dissolved in water, raises H+.Compared to OH-, the concentration of H+ in basic solutions is low.

A material is said to be an acid if it dissolves in water to form H+ ions, whereas a substance is said to be a base if it dissolves in water to form OH ions.

Ionic chemicals known as acids create positive hydrogen ions (H+) when they are dissolved in water.Acids have a sour flavor, conduct electricity, and combine with metals to form hydrogen gas when dissolved in water.

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Hi there!

Counterclockwise.

If a loop of wire is placed in a magnetic field directed out of the page that disappears, that means that the magnetic flux out of the page through the loop has decreased.

The loop will try to oppose this change in the magnetic flux, so an induced current that produces an additional magnetic field out of the page will occur to make up for the decrease in the magnetic flux.

Using the magnetic right-hand rule, the current in the loop would need to be traveling in the counterclockwise direction in order for the produced magnetic field to be directed out of the page inside the loop.

With an increase in gas volume, the gas's temperature must also rise. Temperature and volume changes result in work and an internal energy shift.

Boiling water into steam or freezing water into ice are two examples of isobaric processes. A gas either expands or contracts during the process to maintain constant pressure, and as a result, the net work done by the system or on the system is determined.

An adiabatic process where no heat is added to or removed from the system. an isobaric process, in which there is no change in the pressure of the system. the system's volume remains constant throughout an isochoric process.

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To maximize the objective function p with the given constraints, we use linear programming by identifying the feasible region.

Finding corner points, evaluating p at each point, and selecting the point with the maximum value of p.In this case, the given constraints are x = 0, y = 0, 2x + 2y = 4, and x + y = 8. To maximize the objective function p, we follow these steps:Identify the feasible region by graphing the constraints on a coordinate plane.

The corner points, which represent the vertices of the feasible region.Evaluate the objective function p at each corner point.Select the point with the maximum value of p as the optimal solution that maximizes p while satisfying the given constraints.

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Answer:

16.67 kg

Explanation:

Acceleration = 3 m/s^2

Force = 50 N

Force = mass * acceleration

mass = force / acceleration

mass = 50 / 3

mass = 16.67 kg

\(\\ \sf\longmapsto F=\dfrac{Gm_1m_2}{r^2}\)

\(\\ \sf\longmapsto F=\dfrac{Gm^2}{r^2}\)

\(\\ \sf\longmapsto G=\dfrac{Fr^2}{m^2}\)

SI units:-

\(\\ \sf\longmapsto G=\dfrac{Nm^2}{kg^2}\)

Option C is correct